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<td width="1">&nbsp;&nbsp;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a>&nbsp;&middot; <a href="classes.html"><font color="#004faf">All&nbsp;Classes</font></a>&nbsp;&middot; <a href="mainclasses.html"><font color="#004faf">Main&nbsp;Classes</font></a>&nbsp;&middot; <a href="groups.html"><font color="#004faf">Grouped&nbsp;Classes</font></a>&nbsp;&middot; <a href="modules.html"><font color="#004faf">Modules</font></a>&nbsp;&middot; <a href="functions.html"><font color="#004faf">Functions</font></a></td>
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<p>The QBrush class defines the fill pattern of shapes drawn by <a href="qpainter.html">QPainter</a>. <a href="#details">More...</a></p>
<pre> #include &lt;QBrush&gt;</pre><ul>
<li><a href="qbrush-members.html">List of all members, including inherited members</a></li>
<li><a href="qbrush-qt3.html">Qt 3 support members</a></li>
</ul>
<a name="public-functions"></a>
<h3>Public Functions</h3>
<ul>
<li><div class="fn"/><b><a href="qbrush.html#QBrush">QBrush</a></b> ()</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-2">QBrush</a></b> ( Qt::BrushStyle <i>style</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-3">QBrush</a></b> ( const QColor &amp; <i>color</i>, Qt::BrushStyle <i>style</i> = Qt::SolidPattern )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-4">QBrush</a></b> ( Qt::GlobalColor <i>color</i>, Qt::BrushStyle <i>style</i> = Qt::SolidPattern )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-5">QBrush</a></b> ( const QColor &amp; <i>color</i>, const QPixmap &amp; <i>pixmap</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-6">QBrush</a></b> ( Qt::GlobalColor <i>color</i>, const QPixmap &amp; <i>pixmap</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-7">QBrush</a></b> ( const QPixmap &amp; <i>pixmap</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-8">QBrush</a></b> ( const QImage &amp; <i>image</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-9">QBrush</a></b> ( const QBrush &amp; <i>other</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#QBrush-10">QBrush</a></b> ( const QGradient &amp; <i>gradient</i> )</li>
<li><div class="fn"/><b><a href="qbrush.html#dtor.QBrush">~QBrush</a></b> ()</li>
<li><div class="fn"/>const QColor &amp; <b><a href="qbrush.html#color">color</a></b> () const</li>
<li><div class="fn"/>const QGradient * <b><a href="qbrush.html#gradient">gradient</a></b> () const</li>
<li><div class="fn"/>bool <b><a href="qbrush.html#isOpaque">isOpaque</a></b> () const</li>
<li><div class="fn"/>const QMatrix &amp; <b><a href="qbrush.html#matrix">matrix</a></b> () const</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setColor">setColor</a></b> ( const QColor &amp; <i>color</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setColor-2">setColor</a></b> ( Qt::GlobalColor <i>color</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setMatrix">setMatrix</a></b> ( const QMatrix &amp; <i>matrix</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setStyle">setStyle</a></b> ( Qt::BrushStyle <i>style</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setTexture">setTexture</a></b> ( const QPixmap &amp; <i>pixmap</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setTextureImage">setTextureImage</a></b> ( const QImage &amp; <i>image</i> )</li>
<li><div class="fn"/>void <b><a href="qbrush.html#setTransform">setTransform</a></b> ( const QTransform &amp; <i>matrix</i> )</li>
<li><div class="fn"/>Qt::BrushStyle <b><a href="qbrush.html#style">style</a></b> () const</li>
<li><div class="fn"/>QPixmap <b><a href="qbrush.html#texture">texture</a></b> () const</li>
<li><div class="fn"/>QImage <b><a href="qbrush.html#textureImage">textureImage</a></b> () const</li>
<li><div class="fn"/>QTransform <b><a href="qbrush.html#transform">transform</a></b> () const</li>
<li><div class="fn"/><b><a href="qbrush.html#operator-QVariant">operator QVariant</a></b> () const</li>
<li><div class="fn"/>bool <b><a href="qbrush.html#operator-not-eq">operator!=</a></b> ( const QBrush &amp; <i>brush</i> ) const</li>
<li><div class="fn"/>QBrush &amp; <b><a href="qbrush.html#operator-eq">operator=</a></b> ( const QBrush &amp; <i>brush</i> )</li>
<li><div class="fn"/>bool <b><a href="qbrush.html#operator-eq-eq">operator==</a></b> ( const QBrush &amp; <i>brush</i> ) const</li>
</ul>
<a name="related-non-members"></a>
<h3>Related Non-Members</h3>
<ul>
<li><div class="fn"/>QDataStream &amp; <b><a href="qbrush.html#operator-lt-lt-77">operator&lt;&lt;</a></b> ( QDataStream &amp; <i>stream</i>, const QBrush &amp; <i>brush</i> )</li>
<li><div class="fn"/>QDataStream &amp; <b><a href="qbrush.html#operator-gt-gt-49">operator&gt;&gt;</a></b> ( QDataStream &amp; <i>stream</i>, QBrush &amp; <i>brush</i> )</li>
</ul>
<a name="details"></a>
<hr />
<h2>Detailed Description</h2>
<p>The QBrush class defines the fill pattern of shapes drawn by <a href="qpainter.html">QPainter</a>.</p>
<p>A brush has a style, a color, a gradient and a texture.</p>
<p>The brush <a href="qbrush.html#style">style</a>() defines the fill pattern using the <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> enum. The default brush style is <a href="qt.html#BrushStyle-enum">Qt::NoBrush</a> (depending on how you construct a brush). This style tells the painter to not fill shapes. The standard style for filling is <a href="qt.html#BrushStyle-enum">Qt::SolidPattern</a>. The style can be set when the brush is created using the appropriate constructor, and in addition the <a href="qbrush.html#setStyle">setStyle</a>() function provides means for altering the style once the brush is constructed.</p>
<p align="center"><img src="images/brush-styles.png" alt="Brush Styles" /></p><p>The brush <a href="qbrush.html#color">color</a>() defines the color of the fill pattern. The color can either be one of Qt's predefined colors, <a href="qt.html#GlobalColor-enum">Qt::GlobalColor</a>, or any other custom <a href="qcolor.html">QColor</a>. The currently set color can be retrieved and altered using the <a href="qbrush.html#color">color</a>() and <a href="qbrush.html#setColor">setColor</a>() functions, respectively.</p>
<p>The <a href="qbrush.html#gradient">gradient</a>() defines the gradient fill used when the current style is either <a href="qt.html#BrushStyle-enum">Qt::LinearGradientPattern</a>, <a href="qt.html#BrushStyle-enum">Qt::RadialGradientPattern</a> or <a href="qt.html#BrushStyle-enum">Qt::ConicalGradientPattern</a>. Gradient brushes are created by giving a <a href="qgradient.html">QGradient</a> as a constructor argument when creating the QBrush. Qt provides three different gradients: <a href="qlineargradient.html">QLinearGradient</a>, <a href="qconicalgradient.html">QConicalGradient</a>, and <a href="qradialgradient.html">QRadialGradient</a> - all of which inherit <a href="qgradient.html">QGradient</a>.</p>
<pre>     QRadialGradient gradient(50, 50, 50, 50, 50);
     gradient.setColorAt(0, QColor::fromRgbF(0, 1, 0, 1));
     gradient.setColorAt(1, QColor::fromRgbF(0, 0, 0, 0));

     QBrush brush(gradient);</pre>
<p>The <a href="qbrush.html#texture">texture</a>() defines the pixmap used when the current style is <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>. You can create a brush with a texture by providing the pixmap when the brush is created or by using <a href="qbrush.html#setTexture">setTexture</a>().</p>
<p>Note that applying <a href="qbrush.html#setTexture">setTexture</a>() makes <a href="qbrush.html#style">style</a>() == <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>, regardless of previous style settings. Also, calling <a href="qbrush.html#setColor">setColor</a>() will not make a difference if the style is a gradient. The same is the case if the style is <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a> style unless the current texture is a <a href="qbitmap.html">QBitmap</a>.</p>
<p>The <a href="qbrush.html#isOpaque">isOpaque</a>() function returns true if the brush is fully opaque otherwise false. A brush is considered opaque if:</p>
<ul>
<li>The alpha component of the <a href="qbrush.html#color">color</a>() is 255.</li>
<li>Its <a href="qbrush.html#texture">texture</a>() does not have an alpha channel and is not a <a href="qbitmap.html">QBitmap</a>.</li>
<li>The colors in the <a href="qbrush.html#gradient">gradient</a>() all have an alpha component that is 255.</li>
</ul>
<p><table width="100%" align="center" cellpadding="2" cellspacing="1" border="0">
<tr valign="top" class="odd"><td><img src="images/brush-outline.png" alt="Outlines" /></td><td>To specify the style and color of lines and outlines, use the <a href="qpainter.html">QPainter</a>'s <a href="qpen.html">pen</a> combined with <a href="qt.html#PenStyle-enum">Qt::PenStyle</a> and <a href="qt.html#GlobalColor-enum">Qt::GlobalColor</a>:<pre> QPainter painter(this);

 painter.setBrush(Qt::cyan);
 painter.setPen(Qt::darkCyan);
 painter.drawRect(0, 0, 100,100);

 painter.setBrush(Qt::NoBrush);
 painter.setPen(Qt::darkGreen);
 painter.drawRect(40, 40, 100, 100);</pre>
<p>Note that, by default, <a href="qpainter.html">QPainter</a> renders the outline (using the currently set pen) when drawing shapes. Use <a href="qt.html#PenStyle-enum"><tt>painter.setPen(Qt::NoPen)</tt></a> to disable this behavior.</p>
</td></tr>
</table></p>
<p>For more information about painting in general, see <a href="paintsystem.html">The Paint System</a> documentation.</p>
<p>See also <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a>, <a href="qpainter.html">QPainter</a>, and <a href="qcolor.html">QColor</a>.</p>
<hr />
<h2>Member Function Documentation</h2>
<h3 class="fn"><a name="QBrush"></a>QBrush::QBrush ()</h3>
<p>Constructs a default black brush with the style <a href="qt.html#BrushStyle-enum">Qt::NoBrush</a> (i.e&#x2e; this brush will not fill shapes).</p>
<h3 class="fn"><a name="QBrush-2"></a>QBrush::QBrush ( <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> <i>style</i> )</h3>
<p>Constructs a black brush with the given <i>style</i>.</p>
<p>See also <a href="qbrush.html#setStyle">setStyle</a>().</p>
<h3 class="fn"><a name="QBrush-3"></a>QBrush::QBrush ( const <a href="qcolor.html">QColor</a> &amp; <i>color</i>, <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> <i>style</i> = Qt::SolidPattern )</h3>
<p>Constructs a brush with the given <i>color</i> and <i>style</i>.</p>
<p>See also <a href="qbrush.html#setColor">setColor</a>() and <a href="qbrush.html#setStyle">setStyle</a>().</p>
<h3 class="fn"><a name="QBrush-4"></a>QBrush::QBrush ( <a href="qt.html#GlobalColor-enum">Qt::GlobalColor</a> <i>color</i>, <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> <i>style</i> = Qt::SolidPattern )</h3>
<p>Constructs a brush with the given <i>color</i> and <i>style</i>.</p>
<p>See also <a href="qbrush.html#setColor">setColor</a>() and <a href="qbrush.html#setStyle">setStyle</a>().</p>
<h3 class="fn"><a name="QBrush-5"></a>QBrush::QBrush ( const <a href="qcolor.html">QColor</a> &amp; <i>color</i>, const <a href="qpixmap.html">QPixmap</a> &amp; <i>pixmap</i> )</h3>
<p>Constructs a brush with the given <i>color</i> and the custom pattern stored in <i>pixmap</i>.</p>
<p>The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>. The color will only have an effect for QBitmaps.</p>
<p>See also <a href="qbrush.html#setColor">setColor</a>() and <a href="qbrush-qt3.html#setPixmap">setPixmap</a>().</p>
<h3 class="fn"><a name="QBrush-6"></a>QBrush::QBrush ( <a href="qt.html#GlobalColor-enum">Qt::GlobalColor</a> <i>color</i>, const <a href="qpixmap.html">QPixmap</a> &amp; <i>pixmap</i> )</h3>
<p>Constructs a brush with the given <i>color</i> and the custom pattern stored in <i>pixmap</i>.</p>
<p>The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>. The color will only have an effect for QBitmaps.</p>
<p>See also <a href="qbrush.html#setColor">setColor</a>() and <a href="qbrush-qt3.html#setPixmap">setPixmap</a>().</p>
<h3 class="fn"><a name="QBrush-7"></a>QBrush::QBrush ( const <a href="qpixmap.html">QPixmap</a> &amp; <i>pixmap</i> )</h3>
<p>Constructs a brush with a black color and a texture set to the given <i>pixmap</i>. The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>.</p>
<p>See also <a href="qbrush.html#setTexture">setTexture</a>().</p>
<h3 class="fn"><a name="QBrush-8"></a>QBrush::QBrush ( const <a href="qimage.html">QImage</a> &amp; <i>image</i> )</h3>
<p>Constructs a brush with a black color and a texture set to the given <i>image</i>. The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>.</p>
<p>See also <a href="qbrush.html#setTextureImage">setTextureImage</a>().</p>
<h3 class="fn"><a name="QBrush-9"></a>QBrush::QBrush ( const QBrush &amp; <i>other</i> )</h3>
<p>Constructs a copy of <i>other</i>.</p>
<h3 class="fn"><a name="QBrush-10"></a>QBrush::QBrush ( const <a href="qgradient.html">QGradient</a> &amp; <i>gradient</i> )</h3>
<p>Constructs a brush based on the given <i>gradient</i>.</p>
<p>The brush style is set to the corresponding gradient style (either <a href="qt.html#BrushStyle-enum">Qt::LinearGradientPattern</a>, <a href="qt.html#BrushStyle-enum">Qt::RadialGradientPattern</a> or <a href="qt.html#BrushStyle-enum">Qt::ConicalGradientPattern</a>).</p>
<h3 class="fn"><a name="dtor.QBrush"></a>QBrush::~QBrush ()</h3>
<p>Destroys the brush.</p>
<h3 class="fn"><a name="color"></a>const <a href="qcolor.html">QColor</a> &amp; QBrush::color () const</h3>
<p>Returns the brush color.</p>
<p>See also <a href="qbrush.html#setColor">setColor</a>().</p>
<h3 class="fn"><a name="gradient"></a>const <a href="qgradient.html">QGradient</a> * QBrush::gradient () const</h3>
<p>Returns the gradient describing this brush.</p>
<h3 class="fn"><a name="isOpaque"></a>bool QBrush::isOpaque () const</h3>
<p>Returns true if the brush is fully opaque otherwise false. A brush is considered opaque if:</p>
<ul>
<li>The alpha component of the <a href="qbrush.html#color">color</a>() is 255.</li>
<li>Its <a href="qbrush.html#texture">texture</a>() does not have an alpha channel and is not a <a href="qbitmap.html">QBitmap</a>.</li>
<li>The colors in the <a href="qbrush.html#gradient">gradient</a>() all have an alpha component that is 255.</li>
</ul>
<h3 class="fn"><a name="matrix"></a>const <a href="qmatrix.html">QMatrix</a> &amp; QBrush::matrix () const</h3>
<p>Returns the current transformation matrix for the brush.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qbrush.html#setMatrix">setMatrix</a>().</p>
<h3 class="fn"><a name="setColor"></a>void QBrush::setColor ( const <a href="qcolor.html">QColor</a> &amp; <i>color</i> )</h3>
<p>Sets the brush color to the given <i>color</i>.</p>
<p>Note that calling setColor() will not make a difference if the style is a gradient. The same is the case if the style is <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a> style unless the current texture is a <a href="qbitmap.html">QBitmap</a>.</p>
<p>See also <a href="qbrush.html#color">color</a>().</p>
<h3 class="fn"><a name="setColor-2"></a>void QBrush::setColor ( <a href="qt.html#GlobalColor-enum">Qt::GlobalColor</a> <i>color</i> )</h3>
<p>This is an overloaded member function, provided for convenience.</p>
<p>Sets the brush color to the given <i>color</i>.</p>
<h3 class="fn"><a name="setMatrix"></a>void QBrush::setMatrix ( const <a href="qmatrix.html">QMatrix</a> &amp; <i>matrix</i> )</h3>
<p>Sets <i>matrix</i> as an explicit transformation matrix on the current brush. The brush transformation matrix is merged with <a href="qpainter.html">QPainter</a> transformation matrix to produce the final result.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qbrush.html#matrix">matrix</a>().</p>
<h3 class="fn"><a name="setStyle"></a>void QBrush::setStyle ( <a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> <i>style</i> )</h3>
<p>Sets the brush style to <i>style</i>.</p>
<p>See also <a href="qbrush.html#style">style</a>().</p>
<h3 class="fn"><a name="setTexture"></a>void QBrush::setTexture ( const <a href="qpixmap.html">QPixmap</a> &amp; <i>pixmap</i> )</h3>
<p>Sets the brush pixmap to <i>pixmap</i>. The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>.</p>
<p>The current brush color will only have an effect for monochrome pixmaps, i.e&#x2e; for <a href="qpixmap.html#depth">QPixmap::depth</a>() == 1 (<a href="qbitmap.html">QBitmaps</a>).</p>
<p>See also <a href="qbrush.html#texture">texture</a>().</p>
<h3 class="fn"><a name="setTextureImage"></a>void QBrush::setTextureImage ( const <a href="qimage.html">QImage</a> &amp; <i>image</i> )</h3>
<p>Sets the brush image to <i>image</i>. The style is set to <a href="qt.html#BrushStyle-enum">Qt::TexturePattern</a>.</p>
<p>The current brush color will only have an effect for monochrome images, i.e&#x2e; for <a href="qimage.html#depth">QImage::depth</a>() == 1.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qbrush.html#textureImage">textureImage</a>().</p>
<h3 class="fn"><a name="setTransform"></a>void QBrush::setTransform ( const <a href="qtransform.html">QTransform</a> &amp; <i>matrix</i> )</h3>
<p>Sets <i>matrix</i> as an explicit transformation matrix on the current brush. The brush transformation matrix is merged with <a href="qpainter.html">QPainter</a> transformation matrix to produce the final result.</p>
<p>This function was introduced in Qt 4.3.</p>
<p>See also <a href="qbrush.html#transform">transform</a>().</p>
<h3 class="fn"><a name="style"></a><a href="qt.html#BrushStyle-enum">Qt::BrushStyle</a> QBrush::style () const</h3>
<p>Returns the brush style.</p>
<p>See also <a href="qbrush.html#setStyle">setStyle</a>().</p>
<h3 class="fn"><a name="texture"></a><a href="qpixmap.html">QPixmap</a> QBrush::texture () const</h3>
<p>Returns the custom brush pattern, or a null pixmap if no custom brush pattern has been set.</p>
<p>See also <a href="qbrush.html#setTexture">setTexture</a>().</p>
<h3 class="fn"><a name="textureImage"></a><a href="qimage.html">QImage</a> QBrush::textureImage () const</h3>
<p>Returns the custom brush pattern, or a null image if no custom brush pattern has been set.</p>
<p>If the texture was set as a <a href="qpixmap.html">QPixmap</a> it will be converted to a <a href="qimage.html">QImage</a>.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qbrush.html#setTextureImage">setTextureImage</a>().</p>
<h3 class="fn"><a name="transform"></a><a href="qtransform.html">QTransform</a> QBrush::transform () const</h3>
<p>Returns the current transformation matrix for the brush.</p>
<p>This function was introduced in Qt 4.3.</p>
<p>See also <a href="qbrush.html#setTransform">setTransform</a>().</p>
<h3 class="fn"><a name="operator-QVariant"></a>QBrush::operator QVariant () const</h3>
<p>Returns the brush as a <a href="qvariant.html">QVariant</a></p>
<h3 class="fn"><a name="operator-not-eq"></a>bool QBrush::operator!= ( const QBrush &amp; <i>brush</i> ) const</h3>
<p>Returns true if the brush is different from the given <i>brush</i>; otherwise returns false.</p>
<p>Two brushes are different if they have different styles, colors or pixmaps.</p>
<p>See also <a href="qbrush.html#operator-eq-eq">operator==</a>().</p>
<h3 class="fn"><a name="operator-eq"></a>QBrush &amp; QBrush::operator= ( const QBrush &amp; <i>brush</i> )</h3>
<p>Assigns the given <i>brush</i> to <i>this</i> brush and returns a reference to <i>this</i> brush.</p>
<h3 class="fn"><a name="operator-eq-eq"></a>bool QBrush::operator== ( const QBrush &amp; <i>brush</i> ) const</h3>
<p>Returns true if the brush is equal to the given <i>brush</i>; otherwise returns false.</p>
<p>Two brushes are equal if they have equal styles, colors and pixmaps.</p>
<p>See also <a href="qbrush.html#operator-not-eq">operator!=</a>().</p>
<hr />
<h2>Related Non-Members</h2>
<h3 class="fn"><a name="operator-lt-lt-77"></a><a href="qdatastream.html">QDataStream</a> &amp; operator&lt;&lt; ( <a href="qdatastream.html">QDataStream</a> &amp; <i>stream</i>, const QBrush &amp; <i>brush</i> )</h3>
<p>This is an overloaded member function, provided for convenience.</p>
<p>Writes the given <i>brush</i> to the given <i>stream</i> and returns a reference to the <i>stream</i>.</p>
<p>See also <a href="datastreamformat.html">Format of the QDataStream Operators</a>.</p>
<h3 class="fn"><a name="operator-gt-gt-49"></a><a href="qdatastream.html">QDataStream</a> &amp; operator&gt;&gt; ( <a href="qdatastream.html">QDataStream</a> &amp; <i>stream</i>, QBrush &amp; <i>brush</i> )</h3>
<p>This is an overloaded member function, provided for convenience.</p>
<p>Reads the given <i>brush</i> from the given <i>stream</i> and returns a reference to the <i>stream</i>.</p>
<p>See also <a href="datastreamformat.html">Format of the QDataStream Operators</a>.</p>
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